roughing


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roughing 

Grinding of the surface of a lens to the approximate curvature and thickness with a coarse abrasive. See blocking; smoothing; surfacing.
References in periodicals archive ?
This allows the use of other approaches and also some of the new application-specific plunge roughing tools, which require a short forward step (for example, 20% of the tool diameter).
In addition to removing material using a pocket format, the software also has the capability of using plunge roughing cut type for contour/profile cuts.
The restriction problem is sometimes dealt with by providing a secondary line and valve so that the roughing can be carried out through the turbo or drag pump and the secondary line at the same time in a bypass mode.
Penalties-de Haan Bri (tripping), 1:23; Livingston Wor (hooking), 5:07; Petrecki Wor (slashing), 6:08; Doherty Wor (boarding), 8:11; Quine Bri (roughing), 11:19; Gallant Bri (roughing, misconduct - unsportsmanlike conduct), 19:30; Doherty Wor (roughing), 19:30; Gogol Wor (slashing, roughing), 19:30.